Working in partners, students peeled an orange (representative of the earth), and were told that the rind represented the crust of the earth. The rind was to be torn into 7-10 pieces to represent the plates of the crust. Students then tried to put the pieces (plates) back together! With pieces of the rind (plates) we moved the pieces, together, apart, and one over the other to learn that the earth’s plates move in several ways (convergent, divergent, subduction).
I cut an egg to show the students that an egg can be a good model for the layers of the earth, including cracking the shell to represent the plates.
We finished our science, today, by each student painting a model of the layers of the earth, using Styrofoam balls and acrylic paints.
Tomorrow, we are going to go on a “Surfaces Walk” to see if we can observe changes in the earth’s crust, both natural, and people-made.
This is the perfect time for your child to bring his/her camera to school. They will be able to take photographs of the changes they see on our walk.